index.css not found

[niku2021]

I have tried with codesandbox. But I am getting this error in css file.
Could not find module in path: 'rc-tree-select/assets/index.css' relative to '/src/App.js'

You can see my example here.
https://codesandbox.io/s/dropdown-dis58m?file=/src/App.js

[niku2021]

mistakenly posted

[mingnhat99]

rc-tree-select/assets/index.css removed from v3, use import 'rc-tree-select/assets/index.less'; instead

[rezasohrabi]

importing index.less not works for me, is it better to export pure css instead of less file?